My issues with the premise were based on the assumption that it took place in the very-near future. It doesn't. It starts some time in the near future, with the formation of a wormhole near Saturn, then jumps ahead 50 years, to about 2060 or 2070. In a nut shell:
- Some time around 2035 the U.S. and China go to war. This wipes out a large percentage of the population (though no mention of nukes being used). As a result, the world economy crashes, resulting in the dissolution of most of the world's governments. States become independent and return to a mostly agrarian lifestyle, with schooling and education becoming less important.
- There is a plague called "the blight" wiping out crops across the planet. Corn and some others seem to be resilient, but it's causing a world-wide famine that is threatening to wipe out most life on Earth.
That seems to solve most of the issues I had with it with their motives for leaving Earth. The rest, which you're all free to read, explains the ideas for an off-world colony and such through the circumstances they encounter; namely a lot of fucking with time, and aliens.
If Disney is still thinking about making a remake of The Black Hole, they better stop. This script had some technical issues, but it hit all the right spots for me. Lots of Inception-like fucking with time. Descriptions of FX shots I really want to see, and characters I was interested in. Of course the movie has probably a lot of differences, particularly after they go through the wormhole, but now I'm really interested to see how it all turns on out the big screen.